yes i had several of my 5+ get a sitewide banned, but it only gave the “multiple violations of several accounts, but not the actual incident of the ban itself” you can assume its ban evasion, but they dint ban you for that, just a very vague AI message and ban. even if you did ban evade you usually get a message of “the previous account you are attempting to evade on this account”. also i believe vaguness is intentional so it gives reddit legitamcy.

ALso what triggered all those ban for many people, at least for my i believe when i was temp banned from r/technology for report abused i got an instant ban on all my throwaways and old accts, plus a backup main account i created last year.